Pupillometer.



L. w. BUGBEE it a. n. TILLYER. PUPILOMETFR.

APPLICATION FILED NOV. 24, I9. 1,266,208.

Patented Mayl l, 1918.

INVENTOR & L. w. BUGBEE w er,

E. D. TILLYE/E 831'1'8, A VOLUNTARY rurmnounrm To all whom it may concern:

Be it known that we, LUCIAN W. Became and EDGAR D. TILLYER, citizens of the United States, residing at Southbridge,

6 county of Worcester and State of Massachusetts, have invented certain new and useful mprovements in Pupillometers, of which the following is a specification.

his invention relates to new and useful improvements in measuring instruments and more particularly to what is own as a pupillometer constructed alon the line of a pair of spectacles having plain lenses provided with graduations.

The main object of our invention is to provide a puplilllometer of the above character tween each pupil and the nose, so that the correct pupillary distance may be obtained, t us assurin of the proper fit of the glasses when applied to the wearer. nother object of the the construction of a pupillometer which includes in its construction a frame in which is mounted a pair of lenses provided with the series of graduations of a scale which is Well known in the optical art for obtaining pupillary distance. a With the above and t e invention consists of construct on and the f out in the claims and shown in the wichs" V 1 V I Figureiis a front elevation ofour im proved epnlemeterk showing the sa'meapli avgith u=- 2- r a a Fig} H s 'a ge al onelnsfihdvvi *g' iii of 6eram eva=pem Fi-g; III isaa'en -ar a slightly illustrating as greens ices ways of the lenses. i f" nuke constriit tion lfofl ts; 1

,5 teaser "e ass asetqgeeet chasing: he lessens pointed 11a eaa qand a ile l5 assesse N Specification of Letters Patent. Application fled November 24, 1917. Serial No.

in the present invention is accompanying drawings, in

. sameness mqaiqea fe i'ii o f "are i -iiventiori' sixtliiiing both I; n p p v "will be readilyfapparent that e have Wimprovedj net dears-n se we mit scale is now graduation. 5 read "pu illary distance d fitotit elevation of eitiie etail the?atio ns 2 ta pe ,n

l operations at the me tiin Patented May 14, 1918. aoaeaa.

the pupll of one eye to the pupil of the other e e. It will be noted that t e upper series 0 graduations 5 are arranged on a scale double that of the lower series of graduations distance and the distance of each upil from the nose bridge may (ibtained at the same time. p

It is a well known fact that the millimeter being used for the purpose of measuring papillary but while I form of scale other scale this art ma be usedequal'ly as well with the same resuit. In the use of our improved pupillometer, the same is applied to the face in the same manner as an ordinary pair of slpectacles and the lower from used" for o'btitinin N v gm i 1 5. ld ct" P p while he fupp r gm aq t illxre d ly ihdicatethe distanc fromfofitu 7 0 the ethenxthus carrying am i 1 Free as "abcv'e' stee est taken in to pe in v a sst v. 'P f v d a; simple an fimeatfn mflcm trf i wherein the graduations; Ina be-i to omeway-1 the m m 1%? known typed a distance from one pupil to the other may be readil obtained at one o eration.

In i III we have i1 ustrated a slightly lnodifie form of the invention wherein the graduations 6 are extended in both directions on the lens in order that a correct foci may be obtained should one eye of a person be disposed somewhat above or below the line of the other eye whereby the correct position of the eyes with respect to each other may be obtained. From this it will be apparent that crooked or unalined eyes may be readily measured to obtain the proper foci.

Claims:

1. The combination with a pair of S)6C- tacles including lenses, of a series of gra nations arranged in superimposed relation upon each lens, the lower of said graduations being divided into millimeters for measuring the distance from the nose to each pupil and the upper of said graduations being double that of the lower series and divided into half millimeters for measuring the distance from pupil to pupil.

2. A pupillometer including a lens having lines arranged thereon, a series of graduations being arranged on opposite sides of saidlines and the graduations upon one side ofdthe lines being double that of the other an e.

3. A pupillometer including a lens having a longitui inal and transverse line thereon, graduations being disposed upon opposite sides of the lines and the aduations upon one side of the lines being ouble that of the other side.

4. A pu illometer including lenses, having a series 0 graduations upon each lens oxtendmg laterally and longitudinally thereof. and each series of aduations including mil limeters and hal millimeters arranged in opposed relation.

5. A pupillometer including lenses each having lines extending laterall and longitudinally thereof, a series o millinietel raduatlons arranged upon one side of each of said lines and a series of hal nillimetcr graduations arranged upon the o posite side of said lines as and for the plllPL set forth.

In testimony whereof we have afiixed our signatures in presence of two witnesses.

LUCIAN W. BUGBEE. EDGAR D. TILLYER. Witnesses:

Es'rrma M. LAFLER, H. E. COLEMA 

